超高强度船体结构钢焊接性的研究现状和趋势

雷玄威,周栓宝,黄继华

Current Status and Development Trend on Weldability of Ultra-high Strength Hull Structure Steel

Xuanwei LEI,Shuanbao ZHOU,Jihua HUANG

表2 国内民用超高强度船体结构钢的化学成份(质量百分数)

Table 2 Chemical composition of domestic civil UHSHS steels (mass fraction, %)

Steels Grade/MPa C Si Mn Al Nb V Ti Mo Cr Ni Cu F460[7] 460 0.062 0.23 1.47 0.040 0.094 0.60 F500[8,9] 500 0.05 0.24 1.48 0.03 0.011 0.26 0.28 0.06 0.36 1.57 0.04 0.006 0.038 0.02 0.20 0.22 0.53 0.24 F550[10,11] 550 0.07 0.26 1.10 0.033 0.036 0.017 0.40 0.35 0.39 0.067 0.17 1.51 0.036 0.026 0.004 0.012 0.30 0.31 0.70 0.71 E690[11] 690 0.08 0.15 1.58 0.025 0.095 0.015 0.30 0.30 0.70 1.00 F690[12] 690 0.07 0.23 1.06 0.036 0.043 0.004 0.019 1.0~1.1 3.0~3.1